I try to see whatever’s playing at the Norma Terris, Goodspeed’s experimental theater in Chester, where new plays are fine-tuned on their way to Broadway. The current show, Radio Girl, is a happy diversion from end-of-summer doldrums: a riff on Rebecca of Sunny Brook Farm, with catchy songs by the composer of Dream Girls and a bevy of tap dancing tots in Swiss Dot and Kiss Me bows. Adorable. Through August 22nd. www.goodspeed.org